A Stack Overflow discussion here (How to make a heat map in R based on a gif of the human body?) describe how to plot a map for different part of human body in R. I want to make the plot more interactive, i.e. if I move the cursor to the torso, I want to see a message "torso". In other words, what I want to do is similar to the "identify" function for scattor plot, but is for plots generated from XML. Another example for what I would like to achieve is: https://plot.ly/r/choropleth-maps/ Thanks!
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